Roofing compound



UNITED STATES JOHN W. DIETZEL, OF BURGOON, OHIO.

ROOFING COMPOUND.

SPECIFICATION forming part of Letters Patent No. 368.936, dated August30, 1887.

Application filed May 11, 1887. Serial No. 237,909. (No spccimensl els;alum, two and one-half-pounds; sulphur,

three pounds; copperas, two and one-half pounds; Venetian red,threepounds; rosin, three pounds; gum-shellac, one pound; glue, two andone-half pounds; gypsum, three pounds; tallow, three pounds; salt, threepounds; drier, one pound.

The coal-tar should beheated and the gumshellac first added,as itliquefies slowly. When mingled by agitation.

the shellac is dissolved, the asphalt, which I prefer to heatseparately, is added with the other ingredients and the whole thoroughlyThe compound is applied hot.

Other ingredients may be substituted for the Venetian red, according tothe colorit may be desired to give the roof.

I am aware that a compound has heretofore been used containing theforegoing ingredients except the shellac, glue, and drier, which I addfor the increased gloss of the finished work and penetration of thecompound and the rapidity with which the composition becomes hard afterapplication; but I am not aware that all of the ingredients of mycomposition in the proportions stated have been used together.

What I claim as my invention, and desire to secure by Letters Patent ofthe United States, 1s-

The herein-described composition of matter to be used as a roofingcompound, consisting of asphalt, pne-half bushel; coal tar, two bushels;alum, two and one half pounds; sulphur,

three pounds; copperas, two and one-half 5 pounds; Venetian red, threepounds; rosin, three pounds; gum-shellac, one pound; glue, two andone-half pounds; gypsum, three pounds; tallow, three pounds; salt, threepounds, and drier, one pound, substantially as stated.

JOHN .W. DIE'IZEL.

